What I suggest is my personal preference, and maybe wishful thinking.
It's still a simple design, but for the buyer it'll be a signal to the imagination of possibly achiving an exclusive and expensive lifestyle.
I agree with Chris.... not only that, i think a monetary symbol shows your imagination as a designer on this design even though its a basic design , but for me as a buyer i would be more tempted to buy your T shirt with the symbol , Why?... because i would feel a sense of pride, and achievement wearing it.
Design with words is difficult for wearers to recognize, symbols make such designs much better which attracts users to buy because of creativity. After all It is simple design, and beautiful work done by you.